Cap-gumming machine.



' Patented Aug. 26, 1913.

B. K. FORD.

GAP GUMMING MACHINE. APPLIOATION rum) rnn.2,191o.

UNITED STATES PATENT OFFICE.

BEN K. FORD, OF DETROIT, MICHIGAN, ASSIGNOR, BY MESNE ASSIGNMENTS, T0 DETROIT CAN COMPANY, OF DETROIT, MICHIGAN, A CORPORATION OF NEW JERSEY.

CAP-GUMMING MACHINE.

specification of Letters Patent.

Patented Aug. 26, 1913.

Application filed February 2, 1910. Serial No. 541,622.

To all whom it may concern:

Be it known that 1, BEN K. Form, a citizen of the United States of America, residin at Detroit, in the county of Wayne and tate of Michigan, have invented certain new and useful Improvements in Gap- Gumming Machines, of which the following is a specification, reference being had therein to the accompanying drawings.

It is the object of the invention to pro vide means for quickly a plying adhesive material to packages, an particularly to paper packages, so as to seal the same upon closure.

To this end, the invention consists in the mearis for'gumming the flange of the ca for the package on the inner face thereoii so that when placed on the package the sealing will be effected.

In the drawingsFigui'e 1 is a vertical central section through the machine; and Fig. 2 is a horizontal section on line X-X, Fig. 1.

Aiis the head adapted to fit within the cap of the package. This head is chambered at B and is provided with small ports or openings D at the periphery communicating with said chamber. These ports are so arranged that when the paper cap is placed on the head the flange thereof, in dicated in dotted lines, will cover the ports.

The chamber 13 is filled with a suitable adhesive material, which normally stands at a level, slightly below the port openings D. There is also provided means by which when the cap is placed on the head, the level of the adhesive material is raised, thereby permitting it to pass through the ports and,

coat the inner face of the cap. Furthermore, before removal of the cap, the level is again lowered, thereby preventing escape of the material when the cap is removed.

The means for performing the functions just described,which I preferablyemploy, is of the following construction: TheheadA is provided with a vertically and downwardly extending shank F, which slidably engages a bearing in a member G. At the lower end of the shank F is attached a flexible diaphragm- H, which covers a well I formed in a base member .J, the member G forming a cap above said base member. K are stops for limiting the downward movement of the head, and L is a spring on the shank F, which yieldably supports the head in a predetermined position. M isa conduit for supplying the adhesive material to the chambet I, and N is a receptacle for holding the supply of material preferably in the form of an inverted container, having its lower end sealed by the liquid in a cup 0. The arrangement is such that a constant level of the fluid adhesive material is maintained in the cup 0 and in the chamber B which communicates through the hollow shank F with the chamber 1, and this level is slightly below the mal posit-ion.

In operation, the cap to be gummed is placed upon the head A and a slight downward pressure is applied, which will depress the said head againstthe tension of the spring L. This will cause a pressure upon the diaphragm H, which will depress the same, displacing the material in the chamber I, and forcing it upward through the hollow shank F until the level in the chamber B is above the ports D, and the adhesive is apports D when the head A is in nor- I Upon releasing the pressure the spring L will raise the head, lifting the diaphragm H and again lowering the level within the chamber B to below the ports. During this operation, the escape of the liquid through the supply port M is prevented by a check valve, such as P.

To adapt the machine for use with various sizes of caps, different sizes of heads A are constructed to interchangeably engage the shank F and any desired size maybe selected according to the requirements of the particular work.

What I claim as my invention is:

1. A cap gumming machine, comprising a chambered head having a peripheral face conforming in shape and size to and adapted to engage the interior of the cap flange, said face having ports covered by the cap flange, 

